const validLangs = new Set();
validLangs.add("ja");
validLangs.add("en");

window.onload = function ()
{
	let langInput = document.querySelector("input[name='lang']") || null;
	let useLang = (langInput !== null && validLangs.has(langInput.value)) ? langInput.value : null;

	if(useLang === null)
	{	let localLang = (localStorage.getItem("lang") !== null) ? localStorage.getItem("lang") : null;
		useLang = (localLang !== null && validLangs.has(localLang)) ? localLang : null;
		console.log(useLang);
	}

	const lang = useLang !== null ? useLang : "ja";
	localStorage.setItem("lang", lang);
	

    // 言語設定
	//const lang = localStorage.getItem('lang_setting') || 'ja'
    // const lang = 'ja'
    /*
	const lang = 'en'
    // const lang = localStorage.getItem('lang_setting') || 'ja'

    if ($('input[name="lang"]').length > 0) {
        $('input[name="lang"]').val(lang)
    }
	*/

    i18next.use(i18nextXHRBackend).init({
        backend: {
            loadPath: '/common/json/translation/{{lng}}.json'
        },
        debug: false,
        defaultLng: 'ja',
        fallbackLng: false,
        lng: lang
    }, function (err, t) {
        jqueryI18next.init(i18next, $);
        $('[data-i18n]').localize();
    })
}